Slip vs. viscoelasticity in dewetting thin films |
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Authors: | R Blossey A Münch M Rauscher B Wagner |
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Institution: | Biological Nanosystems, Interdisciplinary Research Institute, c/o IEMN Avenue Poincaré, BP 60069, F-59652, Villeneuve d'Ascq, France. ralf.blossey@iemn.univ-lille1.fr |
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Abstract: | Ultrathin polymer films on non-wettable substrates display dynamic features which have been attributed to either viscoelastic
or slip effects. Here we show that in the weak- and strong-slip regime, effects of viscoelastic relaxation are either absent
or essentially indistinguishable from slip effects. Strong slip modifies the fastest unstable mode in a rupturing thin film,
which questions the standard approach to reconstruct the effective interface potential from dewetting experiments. |
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Keywords: | 83 60 Bc Linear viscoelatiscity 47 50 -d Non-Newtonian fluid flows 68 15 +e Liquid thin films |
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